Owned Cyberpunk 2020 and LOTR:RPG books years before I actually played any real RPGs; I've only been playing pen and paper RPGs since 2006. My first experience was with Vampire The Masquerade and then a bit of 3.5 D&D. I did not become a full-time player and DM until 2012 when a friend started a 4e campaign. I currently play 4e, Savage Worlds, Dungeon World, Fate and 5e.

Are Goliaths able to wield large sized weapons in 5e?Both it would be unbalanced and that they don't exist as a thing in 5e. Basically a creature might have an attack or trait that represents something like what you are saying, a bugbear deals extra damage to prone enemies for example or they will simply have bigger damage dice, but creature and PC rules are very different in 5e.